苜蓿叶象甲田间分布型及抽样技术的研究  

A Study on Spatial Distribution Model and Sampling Method of Hypera postica Cyllenhal Larvae in Field

作　　者：王春华[1] 赵莉[1] 刘长月[1] 王飞[1] 薛鹏[1] 

机构地区：[1]新疆农业大学农学院新疆草地资源与生态重点实验室,乌鲁木齐830052

出　　处：《新疆农业大学学报》2013年第6期467-471,共5页Journal of Xinjiang Agricultural University

基　　金：公益性行业(农业)科研专项(201003079);现代农业产业技术体系建设专项(CARS-35-07)

摘　　要：2010-2011年,分别在新疆呼图壁对苜蓿叶象甲进行拍枝和网捕调查,并根据调查结果对苜蓿叶象甲幼虫的空间分布进行多个聚集度指标和Iwao回归分析。结果表明,其空间分布型为聚集分布,理论拟合为负二项分布,其聚集原因是由昆虫行为或环境条件引起的,聚集强度随种群密度的升高而增加。应用Iwao的抽样模型建立了叶象甲幼虫的田间理论抽样数公式:N=(2.95/m+0.049)/D2。The Hypera postica Cyllenhal was investigated by net catch and pat branch at Hut ubi in 2010 -2011.The spatial distribution pattern of the Hypera postica Cyl lenhal larvae were studied by some aggregation indices and Iwao regression analysis methods. The results showed that the spatial distribution pa tt ern of the larvae was together dist ri hution , theoretical accordance was nega ti ve binomial distribution. Aggregation cause was the insect behavior and environmental conditions. Aggregation strength increased with increasing population densit y.The larvae of the field theoretical sampling nutn her formula was completed with lwao sampling model：N=（2.95/m＋0.049）/D^2.

关 键 词：苜蓿叶象甲 空间分布型 聚集指标 理论抽样数 

分 类 号：Q696.510[生物学—生物物理学]